4.3 Flashcards
1
Q
What is a negative feedback loop?
A
2
Q
What is a positive feedback loop?
A
3
Q
What is an example of a negative feedback loop?
A
4
Q
What is an example of a positive feedback loop?
A
5
Q
How do ice cores show climate conditions from the past?
A
6
Q
What are some common greenhouse gases?
A
7
Q
What has the normal range of greenhouse gases been in the past?
A
8
Q
What are the current levels of greenhouse gases?
A
9
Q
How have humans affected greenhouse gas levels?
A
10
Q
What will happen to greenhouse gases in the future?
A
